Thermal
| Evaporation Evaporation is a method of concentrating a solution by removing a solvent, usually water. This technology is used in the further concentration of reverse osmosis concentrates or ion exchange brines. This technology can handle very weak brines, which may otherwise have fouled the membrane. The concentration is also not limited by osmotic pressure, hence a product with a very high solids content can be produced. Crystallisation The crystallisation process involves the conversion of thickened concentrate and brine into crystals that can be dewatered with a centrifuge or belt press. Crystallisers are typically installed where a zero-effluent strategy is followed. The water from the crystalliser can be recovered, while the salt crystals can be reused or disposed of. Rapid Brine Evaporation (RBE) The RBE system employs vertically suspended evaporation surfaces from which brine is evaporated using wind and solar energy. The brine stream is circulated over the surfaces in a manner that ensures a continually wet surface encouraging the removal of precipitated salts. RBE can increase evaporation rates by between 20 and 30 times those of conventional evaporation ponds, while also increasing the final concentration of the brine. |
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